x="2022"
y="北京奥运会"
print(x+y)
print(x)
print("北京"in y)
print("北京"in x)
a="3+15"
print(a,type(a))
b=eval(a)
print(b,type(b))
he="河南"
print(eval("he"))
age=eval(input())
print(age)